You can block ads in Firefox without using addon. There is an setting for that.

https://support.mozilla.org/en-US/kb/content-blocking

I only skimmed this page but I don't see it mention ads only trackers? Honestly, FF should just integrate something like ublock but this won't happen for reasons.

Anyway, the performance impacts alone are so huge, imo adblocking should be enabled by default for every user focused browser not supported by ad money. Simply a superior browsing experience.

Ads are considered tracker. I have enabled this setting and I don't see any ads. See "content blocking" https://support.mozilla.org/en-US/kb/content-blocking#w_how-...